21
14
It is 11 which is also a prime number
It is 12 because 3*6*12 = 216.
The missing number in the sequence is 36. The pattern alternates between multiplying the previous number by 2 and then adding 6, as seen in the progression: 3 (×2) = 6, 6 (×2) = 12, 12 (×2) = 24, and 24 (×1.5) = 36. Following that, 18 (×2) would be the next logical number after 36.
3, 6, 9, 12, and 13
14
This missing number is 5
It is 11 which is also a prime number
13/16 3+9=12 4+8=12 12 is divisible by 3 39/3=13 48/3=16 13/16 can not both be divided by the same number (13 is a prime number)
The missing number is 1321!!! Simple Fibonacci row! 0+1=1 1+1=2 1+2=3 2+3=5 3+5=8 5+8=13 8+13=21 13+21=34 ......
It is 12 because 3*6*12 = 216.
1 2 3 4 5 6 7 8 9 10 11 12 13. Could not be simpler!
6
The missing number in the sequence is 36. The pattern alternates between multiplying the previous number by 2 and then adding 6, as seen in the progression: 3 (×2) = 6, 6 (×2) = 12, 12 (×2) = 24, and 24 (×1.5) = 36. Following that, 18 (×2) would be the next logical number after 36.
3, 6, 9, 12, and 13
The missing number in the sequence "011235813" corresponds to the Fibonacci series, which is generated by adding the two previous numbers to get the next one. The sequence starts with 0, 1, 1, 2, 3, 5, 8, 13, and the next number after 13 is 21. Therefore, the complete sequence with the missing number included would be "01123581321."
(12/13)x = 20x = 20 / (12/13) = (20 x 13) / 12 = 21 and 2/3